<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <style>
        * {
            margin: 0;
            padding: 0;
        }
        
        .box {
            position: relative;
            column-count: 3;
            /* column-width: 200px; */
            /* column-gap: 30px */
        }
        
        img {
            width: 300px;
        }
    </style>
</head>

<body>
    <div class="box">
        <img src="./upload/01.png" alt="">
        <img src="./upload/02.png" alt="">
        <img src="./upload/03.png" alt=""> <img src="./upload/01.png" alt="">
        <img src="./upload/02.png" alt="">
        <img src="./upload/03.png" alt=""> <img src="./upload/01.png" alt="">
        <img src="./upload/02.png" alt="">
        <img src="./upload/03.png" alt=""> <img src="./upload/01.png" alt="">
        <img src="./upload/02.png" alt="">
        <img src="./upload/03.png" alt=""> <img src="./upload/01.png" alt="">
        <img src="./upload/02.png" alt="">
        <img src="./upload/03.png" alt="">
    </div>
</body>

</html>